RecruitingBehavioural interventionFeasibility of an Interdisciplinary Intervention to Improve Care Transitions for Hospitalized Patients With Substance Use DisordersThe purpose of this study is to evaluate the feasibility and preliminary effectiveness of a primary care-based Interdisciplinary Addiction Care Transition (IntACT) team that will meet patients with substance use disorders (SUD) during a medical hospitalization and provide intensive care management, peer support, and interim SUD and medical care after discharge while facilitating a transition to long term community-based treatment.